1. The Disappearance of Amelia Earhart
In July 1937, aviation pioneer Amelia Earhart set out to complete a daring attempt to fly around the world. She and navigator Fred Noonan disappeared somewhere over the Pacific Ocean while approaching Howland Island. Despite one of the largest search efforts ever conducted by the U.S. Navy at the time, no confirmed trace of their plane was found. Over the decades, researchers have proposed everything from a crash at sea to a secret landing on a remote island. Some believe she may have been captured by Japanese forces, though no solid evidence supports that idea.
What keeps the mystery alive is how advanced Earhart’s navigation planning was for the era. The aircraft carried radio equipment and had carefully charted routes, yet communication was lost abruptly. Expeditions still search islands like Nikumaroro, where scattered clues have occasionally surfaced. None of them have provided a definitive answer. Nearly a century later, the final moments of Earhart’s flight remain one of aviation history’s greatest unanswered questions.
2. The Lost Colony of Roanoke
In the late 1500s, a group of English settlers established a colony on Roanoke Island off the coast of present-day North Carolina. When supply ships returned in 1590 after a three-year delay, the entire settlement had vanished. Houses had been dismantled, and the only clue left behind was the word “Croatoan” carved into a wooden post. There were no signs of violence or struggle.
Historians have spent centuries debating what might have happened. Some believe the colonists joined nearby Indigenous communities for survival. Others suspect famine, disease, or relocation attempts that went wrong. Archaeologists continue to search surrounding areas for evidence of the settlers’ fate. Despite all the theories, the disappearance of more than 100 people remains one of the earliest unsolved mysteries in American history.
3. The Vanishing of the Mary Celeste Crew
In 1872, the merchant ship Mary Celeste was discovered drifting in the Atlantic Ocean near the Azores. The ship itself was largely intact, its cargo of industrial alcohol still on board. Yet every crew member, including the captain’s wife and young daughter, had disappeared. There was no sign of a struggle and the lifeboat was missing.
The strange scene sparked endless speculation. Some theories suggest the crew feared an explosion from alcohol fumes and temporarily abandoned ship. Others imagine piracy, sea monsters, or even paranormal explanations. None of these have been proven. What actually caused the crew to abandon a seaworthy vessel remains unknown.
4. The Disappearance of Percy Fawcett
British explorer Percy Fawcett disappeared in 1925 while searching for a legendary ancient city he called “Z” in the Amazon rainforest. He traveled with his son Jack and Jack’s friend Raleigh Rimell. The trio entered the jungle and sent a few early messages back to civilization. After that, nothing more was ever heard from them.
Fawcett had long believed that remnants of a lost civilization existed deep in the Amazon. His disappearance inspired dozens of rescue attempts and follow-up expeditions over the years. Several explorers who tried to find him vanished or died themselves. Some researchers think Fawcett may have been killed by an isolated tribe. Others believe he simply succumbed to the harsh environment.
5. The Missing Princes in the Tower
In 1483, two young English princes, Edward V and his brother Richard of Shrewsbury, were placed in the Tower of London. Their uncle, Richard, Duke of Gloucester, soon became King Richard III. Not long after, the boys disappeared from public view entirely. They were never seen again.
Many historians suspect they were murdered to secure Richard III’s claim to the throne. Others have suggested rival political factions may have been responsible. In 1674, bones believed to belong to two children were found buried at the Tower. However, their identities have never been conclusively confirmed. The fate of the princes remains one of England’s most haunting royal mysteries.
6. The Disappearance of Ambrose Bierce
Ambrose Bierce, the sharp-tongued journalist and author best known for “An Occurrence at Owl Creek Bridge,” vanished in 1913. In his seventies, he traveled to Mexico during the country’s revolution. He reportedly intended to observe the conflict firsthand. Letters he sent along the way described his journey south.
The final confirmed communication from Bierce came from Chihuahua late that year. After that, he simply disappeared. Some accounts claim he joined revolutionary forces and died in battle. Others believe he was executed or lost somewhere in the chaos of the war. Without reliable documentation, his final chapter remains uncertain.
7. The Sodder Children
On Christmas Eve in 1945, a fire destroyed the Sodder family home in Fayetteville, West Virginia. Five of the Sodder children were believed to have died in the blaze. Yet no human remains were ever found in the rubble. Their parents refused to believe the children had perished.
Over the years, strange clues surfaced. A photo mailed to the family decades later appeared to show one of the missing sons as an adult. Witnesses also claimed to have seen the children after the fire. Investigators never confirmed these leads. The case remains one of the most puzzling disappearances in modern American history.
8. The Flannan Isles Lighthouse Keepers
In December 1900, a supply ship arrived at the Flannan Isles lighthouse off the coast of Scotland. The crew expected to be greeted by three lighthouse keepers stationed there. Instead, the lighthouse stood empty. The men had vanished without a trace.
Inside, investigators found an overturned chair and unfinished meals. Weather logs suggested powerful storms had struck the area days earlier. One theory suggests the keepers were swept away by a rogue wave while securing equipment. Others believe something stranger occurred on the isolated island. No bodies were ever recovered.
9. The Disappearance of Raoul Wallenberg
Raoul Wallenberg, a Swedish diplomat, helped save thousands of Hungarian Jews during World War II. In 1945, as Soviet forces entered Budapest, he was taken into custody by the Red Army. Soviet officials later claimed he died in prison in 1947. The explanation has never fully satisfied historians.
Over the decades, various reports surfaced suggesting Wallenberg may have survived longer in Soviet custody. Some witnesses claimed to have seen him in prisons or labor camps years later. The Soviet Union eventually released limited records, but many remain classified or incomplete. His true fate is still debated.
10. The Disappearance of Jean Spangler
Jean Spangler was a Hollywood actress who appeared in small film roles during the late 1940s. In October 1949, she left home saying she was meeting someone about a film role. She never returned. Her purse was later discovered in Griffith Park.
Inside the purse was a note addressed to someone named “Kirk.” For a time, rumors connected the note to actor Kirk Douglas, though he denied knowing Spangler. Investigators never determined who she intended to meet that night. The case eventually went cold, leaving behind one of Hollywood’s enduring mysteries.
11. The Lost Franklin Expedition
In 1845, British explorer Sir John Franklin set out to chart the Northwest Passage through the Arctic. Two ships and 129 men sailed into the icy waters. After entering the Arctic, the expedition disappeared. No one heard from them again.
Years later, scattered evidence began to emerge. Inuit accounts described starving sailors wandering across the ice. Archaeological discoveries have revealed abandoned ships and camps. Researchers believe the crew suffered from harsh conditions, disease, and possibly lead poisoning. Even so, many details of the expedition’s final months remain unknown.
12. The Disappearance of Ettore Majorana
Ettore Majorana was one of the most brilliant physicists of his generation. In 1938, the Italian scientist suddenly vanished while traveling between Palermo and Naples. Before disappearing, he sent confusing letters suggesting he might take his own life. Then he seemed to change his mind.
Witnesses later claimed to have seen Majorana in monasteries or living quietly under another identity. Some believed he deliberately withdrew from public life to avoid contributing to nuclear weapons research. Others think he died shortly after vanishing. Without definitive evidence, the fate of this gifted scientist remains unresolved.
13. The Beaumont Children
In 1966, three siblings from Adelaide, Australia went to Glenelg Beach for a day out. Jane, Arnna, and Grant Beaumont never returned home. Witnesses reported seeing them with an unknown man near the beach. After that, they vanished completely.
The case sparked one of the largest investigations in Australian history. Authorities pursued thousands of leads over the years. Despite extensive searches and renewed inquiries, no confirmed trace of the children was ever found. Their disappearance still stands as one of the country’s most heartbreaking mysteries.